mag·ne·to·sphere (m g-n  t -sfîr )n. An asymmetrical region surrounding the earth, extending from about one hundred to several thousand kilometers above the surface, in which charged particles are trapped and their behavior is dominated by the earth's magnetic field. mag·ne to·spheric (-sfîr k, -sf r-) adj. |
magnetosphere [mægˈniːtəʊˌsfɪə]
n
(Earth Sciences / Physical Geography) the region surrounding a planet, such as the earth, in which the behaviour of charged particles is controlled by the planet's magnetic field
magnetospheric [mægˌniːtəʊˈsfɛrɪk] adj
| magnetosphere (mg-nt-sfîr) A highly asymmetrical region surrounding the Earth, beginning about 100 km (62 mi) above the surface on the side of the Earth facing the Sun and extending hundreds of thousands of kilometers into space on the opposite side. In this region the Earth's magnetic field exerts a significant influence on any charged particles that encounter it. The magnetosphere deflects most of the charged particles in the solar wind, but also traps and deflects some of these particles toward the Earth's magnetic poles, causing magnetic storms and auroras. |
ThesaurusLegend: Synonyms Related Words Antonyms
| Noun | 1. |  magnetosphere - the magnetic field of a planet; the volume around the planet in which charged particles are subject more to the planet's magnetic field than to the solar magnetic fieldmagnetic field, magnetic flux, flux - the lines of force surrounding a permanent magnet or a moving charged particle |
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